豆型霸王 dou xing ba wang

Zygophyllum fabago subsp. dolichocarpum Popov; Z. fabago subsp. orientale Borissova.

Herbs, perennial, 30-80 cm tall. Roots thick. Stems much branched, woody at basal parts, spreading to prostrate, smooth. Stipules ovate, elliptic, or lanceolate, 4-10 mm, connate on basal stems, distinct and smaller on apical stems. Leaves with 2 leaflets; petiole shorter than leaflets; leaflet blades obovate to oblong-obovate, 1.5-3.3 × 0.6-2 cm, thick, apex rounded. Flower axillary. Pedicel 4-10 mm. Sepals ovate to elliptic, 6-8 × 3-4 mm, margin white and membranous, apex obtuse. Petals basally orangish red and apically white, obovate, as long as sepals. Stamens longer than petals, 1.1-1.2 cm; appendages oblong, half as long as anthers. Capsule oblong to cylindric, 2-3.5 × 0.4-0.5 cm, pendulous, with 5 ridges. Seeds numerous, ca. 3 × 2 mm, surface with dots. Fl. May-Jun, fr. Jul-Sep. 2n = 22, 28.

Alluvial plains, oases, wet sand, wastelands. NW Gansu, W Nei Mongol, Qinghai, Xinjiang [Afghanistan, Kazakhstan, Pakistan, Russia, Turkmenistan; N Africa, W Asia, SE Europe].